Question about Philips Magnavox 51MP392H Rear Projection Television

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Phillips 55PP9363H/17 needs convergence repair part numbers

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This model uses two of the STK-392-120 CONVERGENCE IC chips. If convergence is skewed or will not adjust both of them along with any of the 6.8 ohm resistors that protect them need to be replaced.

Then you take the set into the convergence TECH mode and adjust it for picture in first the non and then in the HD mode if it has it.

You can buy the chips on Ebay for less than 13 dollars plus shipping for a pair-the resistors can be purchased at most electronics stores and are easy to check-any that are discolored or have NO reading across them need to be replaced along with both chips.

I can give you specific instructions about doing this repair. The hard part of the repair is getting at the chips to unsolder them and then replace them.

I can tell you where on Ebay to buy the chips for the best price--I am willing to help you if you have problems doing the repair---all of this presumes you know how to solder and unsolder etc.


If you want my instructions and have any questions, rate this solution as I do this here for FREE.

Thank you for using FIXYA.


Posted on Nov 19, 2009


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The high pitched sound means there is a short on the Deflection board which is the middle board. Most likely it is a shorted transistor or capacitor on that board. Not a do it yourself fix. Someone needs to get the chassis into the service position and check for shorted parts on that board.

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Projection TV sets have two very common problems listed below.

Problem #1) Convergence

These sets need to have all three colors - RED - BLUE - GREEN - lined up correctly on the screen in order for the picture to look normal. This is called convergence.

When its out of alignment the video will look 3-D, wavy, distorted, etc. Most of the time you just need to adjust your convergence in the menu. If you cannot adjust it in the menu - then your convergence is broken and needs to be repaired. Convergence problems are very common on all Projection TV sets including Sony, Samsung,JVC,Philip Magnavox,Panasonic,Akai,Pioneer, Hitachi,Mitsubishi,Zenith and others.
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Here are some of the most common problems with these sets...

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Problem #2 - Another common problem is dull or washed out video.

Your set may have one or more of the following symptoms....

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You can find a new OEM Philips replacement lenticular screen and Fresnal screen for a model # 55PP9363H17 from a major Philips distributor at the following links:

Philips 55PP9363H/17 Replacement Part Lenticular Screen

Philips 55PP9363H/17 Replacement Part Fresnal Screen

And here's a link for the protection screen if needed:

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